Infiniti QX56 (Z62). Manual — part 409
DLK-102
< DTC/CIRCUIT DIAGNOSIS >
B2424 CLOSURE CONDITION
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace back door lock assembly.
B2425 AUTOMATIC BACK DOOR CONTROL UNIT
DLK-103
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
J
L
M
A
B
DLK
N
O
P
B2425 AUTOMATIC BACK DOOR CONTROL UNIT
DTC Logic
INFOID:0000000006225906
DTC DETECTION LOGIC
Diagnosis Procedure
INFOID:0000000006225907
1.
REPLACE AUTOMATIC BACK DOOR CONTROL MODULE
When DTC [B2425] is detected, replace automatic back door control module.
>> Replace automatic back door control module. Refer to
DLK-262, "Removal and Installation"
.
DTC
CONSULT-III dis-
play description
DTC Detection Condition
Possible cause
B2425
AUTO BCK DR CNT
UNIT
Automatic back door control unit detected CPU
malfunction
Automatic back door control mod-
ule
DLK-104
< DTC/CIRCUIT DIAGNOSIS >
B2621 INSIDE ANTENNA
B2621 INSIDE ANTENNA
DTC Logic
INFOID:0000000006225908
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Select “INTELLIGENT KEY” of “BCM” using CONSULT-III.
2.
Select “INSIDE ANT DIAGNOSIS” in “WORK SUPPORT” mode.
3.
Perform inside key antenna (“INSIDE ANT DIAGNOSIS”) on “WORK SUPPORT” of “INTELLIGENT
KEY”.
4.
Check BCM for DTC.
Is inside key antenna DTC detected?
YES
>> Refer to
DLK-104, "Diagnosis Procedure"
.
NO
>> Inside key antenna (instrument center) is OK.
Diagnosis Procedure
INFOID:0000000006225909
1.
CHECK INSIDE KEY ANTENNA INPUT SIGNAL 1
1.
Turn ignition switch OFF.
2.
Check signal between BCM harness connector and ground using oscilloscope.
Is the inspection result normal?
YES
>> Replace BCM. Refer to
BCS-81, "Removal and Installation"
NO
>> GO TO 2.
2.
CHECK INSIDE KEY ANTENNA CIRCUIT
1.
Disconnect BCM connector and inside key antenna (instrument center) connector.
DTC
CONSULT-III display
description
DTC detecting condition
Possible cause
B2621
INSIDE ANTENNA
An excessive high or low voltage from inside anten-
na (instrument center) is sent to BCM
• Inside key antenna (instrument
center)
• Between BCM
∼
Inside key anten-
na (instrument center)
(+)
(–)
Condition
Signal
(Reference value)
BCM
Connector
Terminal
Instrument center
M71
84, 85
Ground
When Intelligent Key is in the
antenna detection area
When Intelligent Key is not in
the antenna detection area
JMKIA3839GB
JMKIA3838GB
B2621 INSIDE ANTENNA
DLK-105
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
J
L
M
A
B
DLK
N
O
P
2.
Check continuity between BCM harness connector and inside key antenna (instrument center) harness
connector.
3.
Check continuity between BCM harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace harness.
3.
CHECK INSIDE KEY ANTENNA INPUT SIGNAL 2
1.
Replace inside key antenna (instrument center). (New antenna or other antenna)
2.
Connect BCM connector and inside key antenna (instrument center) connector.
3.
Check signal between BCM harness connector and ground using oscilloscope.
Is the inspection result normal?
YES
>> Replace inside key antenna (instrument center).
NO
>> Replace BCM. Refer to
BCS-81, "Removal and Installation"
BCM
Inside key antenna (instrument center)
Continuity
Connector
Terminal
Connector
Terminal
M71
84
M105
1
Existed
85
2
BCM
Ground
Continuity
Connector
Terminal
M71
84
Not existed
85
(+)
(–)
Condition
Signal
(Reference value)
BCM
Connector
Terminal
Instrument center
M71
84, 85
Ground
When Intelligent Key is in
the antenna detection area
When Intelligent Key is not
in the antenna detection
area
JMKIA3839GB
JMKIA3838GB
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст